Capacitance is very important in EMC design, and it is also our common filter component! The use of capacitor is not very clear! Here are two points of capacitor filtering:
1, capacitor filtering is a frequency band, many people think that the larger the capacitor, the better, in fact, each capacitor has a certain filter frequency band, large capacitor filter low frequency, small capacitor filter high frequency, mainly based on the resonant frequency of the capacitor It is decided that the capacitor has the best filtering effect at the resonance frequency point! It has a good filtering effect in a frequency band centered on the resonance point, and the other part of the filtering effect is not good! The resonance point of the capacitor and the capacitance value of the capacitor and ESL (equivalent series inductance) is related, you can check the online information, and the theoretical analysis of the series resonant circuit in the conference school will know! Usually we recommend adding UF level capacitors at the power port to filter between several hundred KHZ to 5MHZ. The differential mode interference is due to the resonance point of the UF level capacitor being around 1 MHz. In addition, it is recommended to add 1nF chip capacitor on high frequency digital circuit. The reason is that the resonant frequency of 1nf capacitor is between 100MHZ. The resonance frequency of different manufacturers is different, so it is better to filter tens of MHZ to 200MHZ interference. Solve problems with EMI!
2. If the capacitor is selected, it does not mean that the interference can be filtered out! The river overflows and reaches the high water level. At this time, we often add a ditch drainage, so the place must be a low water level, if it leads to a high water level. If it is a reservoir, it will cause water to be poured and raise the water level. Capacitor filtering is the same as the problem of water management. The capacitor only acts as a ditch. Whether it can be filtered depends on the size of the ground interference connected to the capacitor. We often find that engineers solve the interference problem and the capacitor has no effect. To a large extent, the ground interference itself is very large! Instead, the ground interference is led to the signal or the power supply! Everyone needs to be aware that the ground interference is not the smallest in some cases! We emphasize that there is an important basis for filtering, that is, the ground to be connected is small, which is usually called "quiet land."
Therefore, when we adopt capacitive filtering, we must achieve the filtering effect. We must select the appropriate capacitor and the ground with relatively small interference. The capacitor can be used according to the device manual and experience. The interference can be taken when debugging. Consideration should be given to the previous schematic and PCB.
Vibration Motor is in the original basis to add a vibrating head, made into a Dc Motor drive with a vibration motor. To produce the shaking force.
6V Dc Vibration Motor is introduced:
6V Dc Vibration Motor volume is generally greater than 15 mm, mainly used in massage chair, massage waist, handheld massager, etc.
Characteristics: small volume, strong vibration;
Features: small size, fast speed, stable performance, low price, can use battery drive,Can change the different materials of the pendulum head
Method of use: the best stable in horizontal plane, installed on the dc 6V Dc Vibration Motor output shaft parts, cannot use a hammer to knock, knock prone to press into the dc 6V Dc Vibration Motor drive, may cause damage to internal components, and cannot be used in the case of blocked.
Operating temperature range:
6V Dc Vibration Motor should be used at a temperature of -10~60℃.
The figures stated in the catalog specifications are based on use at ordinary room temperature catalog specifications re based on use at ordinary room temperature (approximately20~25℃.
If a vibration motor is used outside the prescribed temperature range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.Depending on the temperature conditions ,it may be possible to deal with them by changing the grease of the motor's parts.Please feel free to consult with us about this.
Storage temperature range:
Dc Vibration Motor should be stored ta a temperature of -15~65℃.
In case of storage outside this range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.
Service life:
The longevity of Dc Vibration Motor is greatly affected by the load conditions , the mode of operation,the environment of use ,etc.Therefore,it is necessary to check the conditions under which the product will actually be used .The following conditions will have a negative effect on longevity.Please consult with us should any of them apply.
â—Use with a load that exceeds the rated torque
â—Frequent starting
â—Momentary reversals of turning direction
â—Impact loads
â—Long-term continuous operation
â—Forced turning using the output shaft
â—Use in which the permitted overhang load or the permitted thrust load is exceeded
â—A pulse drive ,e.g.,a short break,counter electromotive force,PWM control
â—Use of a voltage that is nonstandard as regards the rated voltage
â—Use outside the prescribed temperature or relative-humidity range,or in a special environment.
â—Please consult with us about these or any other conditions of use that may apply,so that we can be sure that you select the most appropriate model.
when it come to volume production,we're a major player as well .each month,we rurn out 600000 units,all of which are compliant with the rohs directive.Have any questions or special needed, please contact us, we have the engineer group and best sales department to service to you Looking forward to your inquiry. Welcome to our factory.
6V Dc Vibration Motor
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